<!DOCTYPE html>
<html lang="zh-CN">
    <head>
        <meta charset="UTF-8" />
        <title>30_定位-基本使用</title>
        <style>
            div {
                position: absolute;
                left: 500px;
                top: 200px;

                width: 100px;
                height: 100px;
                background-color: aqua;
            }
        </style>
    </head>
    <body>
        <div>

        </div>
    </body>
</html>